Dynamo-Electric Machine

Abstract

The present invention aims to provide a dynamo-electric machine allowing high-voltage resistance, high-heat resistance, and stress resistance to improve. The object can be attained by providing a dynamo-electric machine having a stator or a rotor including a wound coil, a slot core containing the wound coil, a first insulant arranged around the wound coil and mainly formed of an inorganic material, and a second insulant arranged between the inorganic insulant and the slot core and mainly formed of an organic material.

1 . A dynamo-electric machine having a stator or a rotor including a wound coil, a slot core containing the wound coil, a first insulant arranged around the wound coil and mainly formed of an inorganic material, and a second insulant arranged between the first insulant and the core and mainly formed of an organic material. 
     
     
         2 . The dynamo-electric machine according to  claim 1 , wherein the first insulant includes a first inorganic insulant covering a surface of the wound coil and a second inorganic insulant arranged around the first inorganic insulant. 
     
     
         3 . The dynamo-electric machine according to  claim 2 , wherein the first inorganic insulant has a density higher than a density of the second inorganic insulant. 
     
     
         4 . The dynamo-electric machine according to  claim 3 , wherein the first inorganic insulant includes any one of ceramics, glass, cement, mica, alumina, and magnesia or a combination of those. 
     
     
         5 . The dynamo-electric machine according to  claim 3 , wherein the thickness of the first inorganic insulant is 0.1 mm or more to 6 mm or less. 
     
     
         6 . The dynamo-electric machine according to  claim 1 , wherein the second insulant is an adhesive. 
     
     
         7 . The dynamo-electric machine according to  claim 6 , wherein the second insulant includes epoxy resin, unsaturated polyester, or polyimide. 
     
     
         8 . The dynamo-electric machine according to  claim 7 , wherein the second insulant includes a mixture of silica and polyimide. 
     
     
         9 . The dynamo-electric machine according to  claim 8 , wherein the second insulant includes mica. 
     
     
         10 . The dynamo-electric machine according to  claim 1 , wherein the thermal conductivity of the second insulant is 0.6 W/mK or more. 
     
     
         11 . The dynamo-electric machine according to  claim 10 , wherein the thermal conductivity of the second insulant is 2 W/mK or more.